Find the solution to the system of equations: x + 3y = 7
and 2x + 4y = 8
1. isolate x in the first equation:
2. substitute the value for x into the second equation:
3. solve for y
x = 7 - 3y
2(7 – 3y) + 4y = 8
14 - 6y + 4y = 8
14 - 2y = 8
-2y = -6
y = 3
x + 3(3) = 7
4. substitute y into either original equation:
5. write the solution as an ordered pair:

(-2,3)

Step-by-step explanation:

Doing it the way you did and working out the problem you substituted 3 into, x+3(3)=7, 3(3) is 9 and then you subtract 9 from both sides.

7-9=-2

x=-2

Then all you have to do is put it into ordered pairs.

(x,y)

(-2,3)

45

step-by-step explanation:

30+15

answer: a.

step-by-step explanation: the answer is a. because, you need to converge the fractions to find a solution.